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A fossa is a depression or hollow in a bone, such as the hypophyseal fossa in the sphenoid bone. Learn about different types of fossae in the skull, torso, upper and lower limbs, and see examples and references.
Learn about the different types, shapes, and features of bones in the human body. Ridge is a term for a long, narrow line on a bone, such as the ridge of the mandible or the ridge of the scapula.
The posterior cranial fossa is the part of the skull that contains the cerebellum and brainstem. It is formed by the sphenoid, temporal, and occipital bones, and has various openings and sinuses.
The middle cranial fossa is a part of the skull base formed by the sphenoid and temporal bones. It contains the pituitary gland, the temporal lobes, and various nerves and vessels.
A cranial fossa is a part of the skull that contains the brain. Learn about the three cranial fossae (anterior, middle and posterior) and their boundaries, contents and anatomical terms.
The mandibular fossa is a depression in the temporal bone that articulates with the mandible. Learn about its structure, development, function, clinical significance, history and other animals.
The popliteal fossa is a shallow depression at the back of the knee joint, formed by the femur and the tibia. It contains blood vessels, nerves, lymph nodes and muscles, and is an area of clinical interest for anesthesia and surgery.
The pterygopalatine fossa (sphenopalatine fossa) is a cone-shaped depression in the skull that communicates with the nasal and oral cavities, orbit, pharynx, and middle cranial fossa. It contains the pterygopalatine ganglion and the maxillary artery, and is involved in anesthesia of the second division of the trigeminal nerve.